Added runtime type checking to the elements of list and map literals in dartc

tests/language/src/ListLiteral3Test.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Check that arrays from final array literals are immutable.
 
 class ListLiteral3Test {
 
   static final List<String> canonicalJoke = const ["knock", "knock"];
 
   static testMain() {
 
     List<String> joke = const ["knock", "knock"];
     // Elements of canonical lists are canonicalized.
     Expect.equals(true, joke === canonicalJoke);
     Expect.equals(true, joke[0] === joke[1]);
     Expect.equals(true, joke[0] === canonicalJoke[0]);
 
     // Lists from literals are immutable.
     bool caughtException = false;
     try {
       joke[0] = "sock";
     } catch (UnsupportedOperationException e) {
       caughtException = true;
     }
+    Expect.equals(true, caughtException);
     Expect.equals(true, joke[0] === joke[1]);
-    Expect.equals(true, caughtException);
 
     // Make sure lists allocated at runtime are mutable and are
     // not canonicalized.
     List<String> lame_joke = ["knock", "knock"];  // Invokes operator new.
     Expect.equals(true, joke[1] === lame_joke[1]);
     // Operator new creates a mutable list.
     Expect.equals(false, joke === lame_joke);
     lame_joke[1] = "who";
     Expect.equals(true, "who" === lame_joke[1]);
 
@@ skipping 19 matching lines @@
     } catch (UnsupportedOperationException e) {
       caughtException = true;
     }
     Expect.equals(true, caughtException);
   }
 }
 
 main() {
   ListLiteral3Test.testMain();
 }